mirror of
https://gitlab.freedesktop.org/libbsd/libbsd.git
synced 2025-01-08 11:02:24 +01:00
bc65806ce2
This makes sure we include it when expected, alongside the man pages, and the test cases, and do not accidentally break the ABI if the system starts providing such interface.
350 lines
9.2 KiB
Plaintext
350 lines
9.2 KiB
Plaintext
# Process this file with autoconf to produce a configure script.
|
|
|
|
AC_PREREQ([2.67])
|
|
AC_INIT([libbsd], m4_esyscmd([./get-version]), [libbsd@lists.freedesktop.org])
|
|
AC_CONFIG_SRCDIR([src/strlcpy.c])
|
|
AC_CONFIG_AUX_DIR([build-aux])
|
|
AC_CONFIG_MACRO_DIR([m4])
|
|
|
|
AM_INIT_AUTOMAKE(
|
|
[1.11]
|
|
[-Wall]
|
|
[foreign]
|
|
[nostdinc]
|
|
[subdir-objects]
|
|
[no-dist-gzip dist-xz]
|
|
)
|
|
AM_SILENT_RULES([yes])
|
|
|
|
LIBBSD_ABI_MAJOR=0
|
|
LIBBSD_ABI_MINOR=11
|
|
LIBBSD_ABI_PATCH=7
|
|
|
|
LIBBSD_ABI="$LIBBSD_ABI_MAJOR:$LIBBSD_ABI_MINOR:$LIBBSD_ABI_PATCH"
|
|
AC_SUBST([LIBBSD_ABI])
|
|
|
|
# Check and store if we got user supplied variables
|
|
user_CFLAGS=${CFLAGS-unset}
|
|
|
|
# Checks for operating system services and capabilities.
|
|
AC_USE_SYSTEM_EXTENSIONS
|
|
AC_SYS_LARGEFILE
|
|
|
|
AM_PROG_AR
|
|
LT_INIT
|
|
|
|
AC_CACHE_CHECK([if ld supports --version-script flag],
|
|
[libbsd_cv_version_script], [
|
|
echo "{ global: symbol; local: *; };" >conftest.map
|
|
save_LDFLAGS=$LDFLAGS
|
|
LDFLAGS="$LDFLAGS -Wl,--version-script=conftest.map"
|
|
AC_LINK_IFELSE([
|
|
AC_LANG_PROGRAM([[
|
|
extern int symbol(void);
|
|
int symbol(void) { return 0; }
|
|
]], [[
|
|
]])
|
|
], [
|
|
libbsd_cv_version_script=yes
|
|
], [
|
|
libbsd_cv_version_script=no
|
|
])
|
|
LDFLAGS="$save_LDFLAGS"
|
|
rm -f conftest.map
|
|
])
|
|
AM_CONDITIONAL([HAVE_LINKER_VERSION_SCRIPT],
|
|
[test "x$libbsd_cv_version_script" = "xyes"])
|
|
|
|
is_windows=no
|
|
AS_CASE([$host_os],
|
|
[mingw*], [
|
|
is_windows=yes
|
|
],
|
|
)
|
|
AM_CONDITIONAL([OS_WINDOWS], [test "x$is_windows" = "xyes"])
|
|
|
|
# Checks for programs.
|
|
AC_CHECK_TOOL([OBJDUMP], [objdump])
|
|
AC_PROG_CC
|
|
AC_PROG_SED
|
|
AC_PROG_INSTALL
|
|
AC_PROG_LN_S
|
|
|
|
# Set default compiler variables
|
|
AS_IF([test "$user_CFLAGS" = unset], [
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wall])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wextra])
|
|
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wbad-function-cast])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wc99-c11-compat])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wcast-align])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wdeclaration-after-statement])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wdocumentation])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wduplicated-branches])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wduplicated-cond])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wformat -Wformat-security])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wformat=2])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Winit-self])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wlogical-not-parentheses])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wlogical-op])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wmissing-declarations])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wmissing-format-attribute])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wmissing-prototypes])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wnested-externs])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wno-missing-field-initializers])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wno-nonnull-compare])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wno-tautological-constant-out-of-range-compare])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wno-unused-parameter])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wnull-dereference])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wold-style-definition])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wpointer-arith])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wregister])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wrestrict])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wshadow])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wshift-negative-value])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wsizeof-array-argument])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wstrict-prototypes])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wswitch-bool])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wvla])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-Wwrite-strings])
|
|
|
|
CFLAGS="$CFLAGS $LIBBSD_COMPILER_FLAGS"
|
|
|
|
AC_ARG_ENABLE([sanitize],
|
|
[AS_HELP_STRING([--enable-sanitize], [enable compiler sanitizer support])],
|
|
[
|
|
LIBBSD_COMPILER_FLAGS=''
|
|
LIBBSD_CHECK_COMPILER_FLAG([-fsanitize=address])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-fsanitize=leak])
|
|
LIBBSD_CHECK_COMPILER_FLAG([-fsanitize=undefined])
|
|
|
|
CFLAGS="$CFLAGS $LIBBSD_COMPILER_FLAGS"
|
|
LDFLAGS="$LDFLAGS $LIBBSD_COMPILER_FLAGS"
|
|
])
|
|
])
|
|
|
|
# Checks for libraries.
|
|
AC_CHECK_LIB([testu01], [unif01_CreateExternGenBits],
|
|
[TESTU01_LIBS="-ltestu01"])
|
|
AC_SUBST([TESTU01_LIBS])
|
|
AM_CONDITIONAL([HAVE_LIBTESTU01],
|
|
[test "x$ac_cv_lib_testu01_unif01_CreateExternGenBits" = "xyes"])
|
|
|
|
saved_LIBS="$LIBS"
|
|
AC_SEARCH_LIBS([MD5Update], [md], [
|
|
AS_IF([test "x$ac_cv_search_MD5Update" != "xnone required"], [
|
|
MD5_LIBS="$MD5_LIBS $ac_cv_search_MD5Update"
|
|
need_transparent_libmd=yes
|
|
])
|
|
], [
|
|
AC_MSG_ERROR([cannot find required MD5 functions in libc or libmd])
|
|
])
|
|
AC_SEARCH_LIBS([SHA512Update], [md], [
|
|
AS_IF([test "x$ac_cv_search_SHA512Update" != "xnone required"], [
|
|
LIBBSD_LIBS="$LIBBSD_LIBS $ac_cv_search_SHA512Update"
|
|
])
|
|
], [
|
|
AC_MSG_ERROR([cannot find required SHA-2 functions in libc or libmd])
|
|
])
|
|
LIBS="$saved_LIBS"
|
|
|
|
AM_CONDITIONAL([NEED_TRANSPARENT_LIBMD],
|
|
[test "x$need_transparent_libmd" = "xyes"])
|
|
|
|
AS_CASE([$host_os],
|
|
[*-gnu*], [
|
|
# In old glibc versions (< 2.17) clock_gettime() is in librt.
|
|
saved_LIBS="$LIBS"
|
|
AC_SEARCH_LIBS([clock_gettime], [rt], [
|
|
AS_IF([test "x$ac_cv_search_clock_gettime" != "xnone required"], [
|
|
LIBBSD_LIBS="$LIBBSD_LIBS $ac_cv_search_clock_gettime"
|
|
])
|
|
])
|
|
LIBS="$saved_LIBS"
|
|
],
|
|
)
|
|
|
|
# Checks for header files.
|
|
AC_CHECK_HEADERS([\
|
|
sys/ndir.h \
|
|
sys/dir.h \
|
|
ndir.h \
|
|
dirent.h \
|
|
pwd.h \
|
|
grp.h \
|
|
stdio_ext.h \
|
|
])
|
|
|
|
# Checks for typedefs, structures, and compiler characteristics.
|
|
AC_C_INLINE
|
|
AC_C_TYPEOF
|
|
AC_TYPE_INT64_T
|
|
AC_TYPE_MODE_T
|
|
AC_TYPE_OFF_T
|
|
AC_TYPE_PID_T
|
|
AC_TYPE_UID_T
|
|
AC_TYPE_SIZE_T
|
|
AC_TYPE_SSIZE_T
|
|
|
|
AC_CHECK_DECL([F_CLOSEM], [
|
|
AC_DEFINE([HAVE_FCNTL_CLOSEM], [1],
|
|
[Define to 1 if you have fcntl(F_CLOSEM)])
|
|
], [], [[
|
|
#include <limits.h>
|
|
#include <fcntl.h>
|
|
]])
|
|
|
|
AC_CHECK_DECLS([environ], [], [], [[
|
|
#include <unistd.h>
|
|
]])
|
|
|
|
AC_CACHE_CHECK([for GNU .init_array section support],
|
|
[libbsd_cv_gnu_init_array_support], [
|
|
AC_RUN_IFELSE([
|
|
AC_LANG_SOURCE([[
|
|
static int rc = 1;
|
|
static void init(int argc) { if (argc == 1) rc = 0; }
|
|
void (*init_func)(int argc) __attribute__((__section__(".init_array"), __used__)) = init;
|
|
int main() { return rc; }
|
|
]])
|
|
], [
|
|
libbsd_cv_gnu_init_array_support=yes
|
|
], [
|
|
libbsd_cv_gnu_init_array_support=no
|
|
], [
|
|
AC_PREPROC_IFELSE([
|
|
AC_LANG_SOURCE([[
|
|
/* Look for a known libc that supports .init_array with the GNU extension
|
|
* to pass main() arguments to the init functions. */
|
|
#include <stdlib.h>
|
|
#if defined __GLIBC_PREREQ
|
|
# if __GLIBC_PREREQ(2, 4)
|
|
/* glibc supports GNU .init_array since 2.4. */
|
|
# else
|
|
# error glibc does not support GNU .init_array
|
|
# endif
|
|
#else
|
|
/*
|
|
* Basic SysV ABI .init_array support, init functions do not get arguments:
|
|
* - Bionic since its inception.
|
|
* - uClibc since 0.9.29.
|
|
*/
|
|
# error unknown whether libc supports GNU .init_array
|
|
#endif
|
|
]])
|
|
], [
|
|
libbsd_cv_gnu_init_array_support=yes
|
|
], [
|
|
libbsd_cv_gnu_init_array_support=no
|
|
])
|
|
])
|
|
])
|
|
AM_CONDITIONAL([BUILD_LIBBSD_CTOR],
|
|
[test "$libbsd_cv_gnu_init_array_support" = yes])
|
|
|
|
# Checks for library functions.
|
|
AC_MSG_CHECKING([for program_invocation_short_name])
|
|
AC_LINK_IFELSE([
|
|
AC_LANG_PROGRAM([[
|
|
#include <errno.h>
|
|
]], [[
|
|
const char *p = program_invocation_short_name;
|
|
]])
|
|
], [
|
|
AC_DEFINE([HAVE_PROGRAM_INVOCATION_SHORT_NAME], [1],
|
|
[Define to 1 if you have program_invocation_short_name])
|
|
AC_MSG_RESULT([yes])
|
|
], [
|
|
AC_MSG_RESULT([no])
|
|
])
|
|
|
|
AC_MSG_CHECKING([for __progname])
|
|
AC_LINK_IFELSE([
|
|
AC_LANG_PROGRAM([[
|
|
#include <stdio.h>
|
|
extern char *__progname;
|
|
]], [[
|
|
printf("%s", __progname);
|
|
]])
|
|
], [
|
|
AC_DEFINE([HAVE___PROGNAME], [1], [Define to 1 if you have __progname])
|
|
AC_MSG_RESULT([yes])
|
|
], [
|
|
AC_MSG_RESULT([no])
|
|
])
|
|
|
|
AC_MSG_CHECKING([for __register_atfork])
|
|
AC_LINK_IFELSE([
|
|
AC_LANG_PROGRAM([[
|
|
#include <stddef.h>
|
|
extern void *__dso_handle;
|
|
extern int __register_atfork(void (*)(void), void(*)(void), void (*)(void), void *);
|
|
]], [[
|
|
__register_atfork(NULL, NULL, NULL, __dso_handle);
|
|
]])
|
|
], [
|
|
AC_DEFINE([HAVE___REGISTER_ATFORK], [1],
|
|
[Define to 1 if you have __register_atfork])
|
|
AC_MSG_RESULT([yes])
|
|
], [
|
|
LIBBSD_LIBS="$LIBBSD_LIBS -pthread"
|
|
AC_MSG_RESULT([no])
|
|
])
|
|
|
|
AC_CHECK_FUNCS([\
|
|
clearenv \
|
|
dirfd \
|
|
flock \
|
|
fopencookie \
|
|
__fpurge \
|
|
funopen \
|
|
getauxval \
|
|
getentropy \
|
|
getexecname \
|
|
getline \
|
|
open_memstream \
|
|
pstat_getproc \
|
|
sysconf \
|
|
])
|
|
|
|
need_funopen=yes
|
|
AS_CASE([$host_os],
|
|
[*-musl*], [
|
|
# On musl >= 1.1.19, fopencookie() got implemented, and because we were
|
|
# checking for its presence to decide whether to build funopen(), it got
|
|
# included in builds even when previously it had not been included, which
|
|
# is partially an ABI issue, but given that disabling it now would be
|
|
# worse, we'll ignore this as this is only a problem with downgrades. And
|
|
# enable it explicitly
|
|
need_funopen=yes
|
|
],
|
|
[darwin*], [
|
|
# On macOS we do not have fopencookie(), and cannot implement it.
|
|
need_funopen=no
|
|
],
|
|
)
|
|
|
|
AM_CONDITIONAL([HAVE_GETENTROPY], [test "x$ac_cv_func_getentropy" = "xyes"])
|
|
AM_CONDITIONAL([NEED_FUNOPEN], [test "x$need_funopen" = "xyes"])
|
|
AS_IF([test "x$need_funopen" = "xno" && \
|
|
test "x$ac_cv_func_funopen" != "xyes" && \
|
|
test "x$ac_cv_func_fopencookie" = "xyes"], [
|
|
AC_MSG_WARN([[can implement funopen() now based on newly added fopencooke(), report upstream]])
|
|
])
|
|
|
|
AC_SUBST([MD5_LIBS])
|
|
AC_SUBST([LIBBSD_LIBS])
|
|
|
|
AC_CONFIG_FILES([
|
|
Makefile
|
|
include/Makefile
|
|
man/Makefile
|
|
src/Makefile
|
|
src/libbsd.pc
|
|
src/libbsd-ctor.pc
|
|
src/libbsd-overlay.pc
|
|
test/Makefile
|
|
])
|
|
AC_CONFIG_HEADERS([config.h])
|
|
AC_OUTPUT
|